The SL80C051 is a tamper-resistant, dual MCS8051 instruction-compatible multi-controller that can directly interface with Freescale’s new MR2A16A 4-Mb MRAMs. Dubbed the SL80C051-2001 for the tamper-resistant version and SL80C051-2002 for the lower-cost non-tamper-resistant version, the Dual8051 multi-controllers can substantially reduce component count, minimize PCB board space, and improve overall processing performance. They do all of this while warding off attacks from software and data pirates in embedded applications that require secure data collection and storage.

Both devices are based on a parallel pipeline architecture. The architecture is capable of instruction execution speeds of up to 25 MIPS when used with one or more 20-ns Freescale MR2A16A MRAMs or up to 11 MIPs when used with one or more SST 32HF202 flash memory and SRAM combination memories or traditional NVRAMs.

Sharing a common program counter output register and 16-bit external program/data bus, both of the on-board MCS8051 instruction-set-compatible CPUs are completely autonomous. They can operate independently from one another or respond to a dedicated internal interrupt line for parallel processing and controller applications.

Because each CPU shares a common external program/data memory of up to 2 MB using their own extended addressing windows, they can process and pass large amounts of data between each other without actually having to move the data. This saves an enormous amount of processing cycles. The result is a higher multiprocessing throughput capability not found on any other 8051-type microcontroller.

The SL80C051-2001 costs $60. The SL80C051-2002 costs $45. Each device is shipped with a unique security key programmed in.    

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